Apply suggestions from code review

Co-authored-by: Victor Stinner <vstinner@python.org>

Author: skirpichev

Lib/test/test_builtin.py

@@ -2991,7 +2991,7 @@ def test_namespace_order(self):
 
 def load_tests(loader, tests, pattern):
     from doctest import DocTestSuite
-    if getattr(sys, 'float_repr_style', '') == 'short':
+    if sys.float_repr_style == 'short':
         tests.addTest(DocTestSuite(builtins))
     return tests
 

Lib/test/test_enum.py

@@ -36,8 +36,7 @@ def load_tests(loader, tests, ignore):
                 optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE,
                 ))
     howto_tests = os.path.join(REPO_ROOT, 'Doc/howto/enum.rst')
-    if (os.path.exists(howto_tests)
-            and getattr(sys, 'float_repr_style', '') == 'short'):
+    if os.path.exists(howto_tests) and sys.float_repr_style == 'short':
         tests.addTests(doctest.DocFileSuite(
                 howto_tests,
                 module_relative=False,

Lib/test/test_float.py

@@ -795,7 +795,7 @@ def test_format(self):
         self.assertRaises(ValueError, format, x, '.6,n')
 
     @support.requires_IEEE_754
-    @unittest.skipUnless(getattr(sys, 'float_repr_style', '') == 'short',
+    @unittest.skipUnless(sys.float_repr_style == 'short',
                          "applies only when using short float repr style")
     def test_format_testfile(self):
         with open(format_testfile, encoding="utf-8") as testfile:

Lib/test/test_statistics.py

@@ -3319,7 +3319,7 @@ def tearDown(self):
 def load_tests(loader, tests, ignore):
     """Used for doctest/unittest integration."""
     tests.addTests(doctest.DocTestSuite())
-    if getattr(sys, 'float_repr_style', '') == 'short':
+    if sys.float_repr_style == 'short':
         tests.addTests(doctest.DocTestSuite(statistics))
     return tests